When qcow2_get_cluster_offset() sees a zero cluster in a version 2
image, it (rightfully) returns an error. But in doing so it shouldn't
leak an L2 table cache reference.
Signed-off-by: Kevin Wolf <kw...@redhat.com>
Reviewed-by: Max Reitz <mre...@redhat.com>
---
block/qcow2-cluster.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c
index 60a6910..331ab08 100644
--- a/block/qcow2-cluster.c
+++ b/block/qcow2-cluster.c
@@ -491,6 +491,7 @@ int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t
offset,
break;
case QCOW2_CLUSTER_ZERO:
if (s->qcow_version < 3) {
+ qcow2_cache_put(bs, s->l2_table_cache, (void**) &l2_table);
return -EIO;
}
c = count_contiguous_clusters(nb_clusters, s->cluster_size,
--
1.8.3.1
